We’ve covered the importance of the gift-giving holidays for developers previously, and Rovio is one of the biggest examples of just how big Dec. 25 is for mobile-game developers. As Rovio’s infographic points out, the 8 million downloads for 17.4 million new devices is just about one Angry Bird download for every two phones or tablets.

While finding new games and apps is still a problem on the iOS App Store, the established publishers are having no trouble building on their past success.